A group of hard drive manufacturers and CD-ROM chipset suppliers have said a proprietary bus is not the best way to accelerate CD-ROM performance, and have instead come out in support of software. The companies include Fujitsu Ltd’s Computer Products of America, Maxtor Corp, Quantum Corp, Seagate Technology Inc and Oak Technology Inc. They said a software alternative takes full advantage of hard drive performance and capabilities and is said to be compatible with all CD-ROM hard drives.